The snow in the north comes after the wind, and the surprise comes to the world. At first, it was soft, trivial and embellished. It fell silently on the tree, accumulated into a flower, floated into the lake and disappeared, attracting still water and waves, and rolled naughtily when it was gathered in its hands. The snow is getting bigger and bigger, and there are already millions of pear trees in a trance, one after another, shining with silver light. (2) In the dark night and boundless morning fog, you cleaners are always busy. Your faces are so delicate and your backs are so high. 360 lines, each line is a champion. You are so hardworking that you moisten the skin of the earth with your own sweat.